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Midi.h
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Midi.h
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#include "types.h"
class Midi {
struct Track {
enum State {
INIT, NOTEON2, CONTROL2, PITCH2, META, META2, DUMMY, DUMMYV,
// following line must be assigned 8 to 15
NOTEOFF, NOTEON, KEY, CONTROL, PROGRAM, CHANNEL, PITCH, EX,
TEMPO, TEMPO2, TEMPO3
};
Track(Midi &midi, int size);
~Track() {
delete[] buf;
buf = NULL;
}
void DeltaTime();
u8 Process1(u8 data);
int Process();
void Note(u8 midi_ch, u8 note, u8 velo);
void Reset() { // clear except lim, startTime
ptr = buf;
v = len = 0;
time = 0;
state = state0 = INIT;
ch = d1 = 0;
DeltaTime();
}
Midi &midi;
u8 *buf, *ptr, *lim;
u32 v, len;
s32 time; // S23.8
State state, state0;
float startTime;
u8 ch, d1;
};
friend class Track;
typedef std::vector<Track *> Tracks;
enum { N = 16 };
struct Ch {
Ch() { Reset(); }
void Reset() {
prognum = 0;
volume = 100;
pan = 64;
expression = rpnl = rpnm = 127;
bend = 0;
bendsen = 2;
}
u8 volume, rpnl, rpnm, pan, expression, prognum;
s16 bend;
s8 bendsen;
};
public:
Midi(float interval);
~Midi();
void Clear();
int Prepare(const char *path);
int Process();
void Reset();
float GetPosition() const { return timeAll ? time / timeAll : 0.f; }
void Position(float position);
void SetSpeed(float _speed) { speed = _speed; }
float GetTime() const { return time; }
float GetTotalTime() const { return timeAll; }
int get2();
int get4();
private:
Ch ch[N];
Tracks tracks;
FILE *fi;
u32 timebase;
u16 delta;
float time, timeAll, speed, interval;
bool ready, drive;
};
extern Midi *gMidi;